If there is a history of menopause, it may be due to preterm miscarriage or ectopic pregnancy. If there is no history of menopause, stomach pain and vaginal bleeding may be caused by inflammation of the pelvis or endometriosis. In addition, inflammation of the endometrium and endometrial lesions, such as endometrial cancer, can cause stomach pain and vaginal bleeding. Therefore, it is recommended to do gynecological examination, ultrasound examination, blood test for sex hormone six, as well as blood routine and clotting time examination, to make a preliminary diagnosis based on the results of the examination, and then give appropriate medication for treatment.